US2928814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of gaseous olefins by means of a catalyst consisting essentially of an oxygen treated bauxite
Assignee: Sunoco Inc
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Filing: 1956-06-29
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Granted: 1960-03-15
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Expires: 1976-06-29
Abstract
No abstract record available.
Inventors
- 👤 Ivor W Mills
- 👤 William A Gallup
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:29
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
PROCESS FOR POLYMERIZING AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, AND MIXTURES OF ETHYLENE AND PROPYLENE, WHICH COMPRISES CONTACTING A MIXTURE OF SAID OLEFIN, AT LEAST 0.05% BY WEIGHT OF OXYGEN, BASED ON THE OLEFIN, AND A LIQUID HYDROCARBON REACTION MEDIUM WITH BAUXITE CONTAINING FROM 0.5% TO 50% IRON (CALCULATED AS FE2O3) AND AT LEAST 0.5% TITANIUM (CALCULATED AS TIO2), SAID BAUXITE HAVING BEEN HEATED TO A TEMPERATURE OF AT LEAST 700*F. IN CONTACT WITH OXYGEN PRIOR TO SAID CONTACTING WITH SAID MIXTURE.
Claim 2
Dependent Claim
86 words
PROCESS FOR POLYMERIZING AN OLEFIN SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, AND MIXTURES OF ETHYLENE AND PROPYLENE, WHICH COMPRISES CONTACTING A MIXTURE OF SAID OLEFIN, AT LEAST 0.05% BY WEIGHT OF OXYGEN, BASED ON THE OLEFIN, AND A LIQUID HYDROCARBON REACTION MEDIUM WITH BAUXITE CONTAINING FROM 0.5% TO 50% IRON (CALCULATED AS FE2O3) AND AT LEAST 0.5% TITANIUM (CALCULATED AS TIO2), SAID BAUXITE HAVING BEEN HEATED TO A TEMPERATURE OF AT LEAST 700*F. IN CONTACT WITH OXYGEN PRIOR TO SAID CONTACTING WITH SAID MIXTURE.
References Cited (Backward Citations)
US2381198A
Cited
US2406081A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-15 | 1963-09-14 | 1964-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-15 | 1967-09-14 | 1968-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-15 | 1971-09-14 | 1972-03-15 | $7700.00 | Window Closed / Lapsed |